Just browsing the posts here, and without getting overly religious or philosophical, in alot of older religions, knowing somethings real name gives you power over it.Most likely stemming from information being the key to power, you know everything about something, you know how it will act, you know its reactions, know how to defeat it. Blah blah you get my drift.I think its in Indian lore that you dont say anyones real name besides in imporatant ceremonies, as it can call unwanted attention to that person.